{"cve":{"cve_id":"CVE-2026-52911","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00176,"epss_percentile":0.07261,"epss_as_of":"2026-06-23","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: scope conn->binding slowpath to bound sessions only\n\nWhen the binding SESSION_SETUP sets conn->binding = true, the flag stays\nset after the call so that the global session lookup in\nksmbd_session_lookup_all() can find the session, which was not added to\nconn->sessions. Because the flag is connection-wide, the global lookup\npath will also resolve any other session by id if asked.\n\nTighten the global lookup so that the returned session must have this\nconnection registered in its channel xarray (sess->ksmbd_chann_list).\nThe channel entry is installed by the existing binding_session path in\nntlm_authenticate()/krb5_authenticate() when a SESSION_SETUP completes\nsuccessfully, so this condition is a strict equivalent of \"this\nconnection has been accepted as a channel of this session\". Connections\nthat have not bound to a given session cannot reach it via the global\ntable.\n\nThe existing conn->binding gate for entering the slowpath is preserved\nso that non-binding connections keep the fast-path-only behavior, and\nthe session->state check is unchanged.","published_at":"2026-06-21T06:18:49.342000Z","last_modified_at":null,"cvss_v3_score":8.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/e74c00c6af428a39e564cdc5bd3a3648c6d8de87","https://git.kernel.org/stable/c/e3a93ce6e25757b8f375e38b8f91e1d9da4edc1a","https://git.kernel.org/stable/c/1ff46c9915c1cbf454db58a8cb87f7cac818e6a6","https://git.kernel.org/stable/c/974c1c224e85549dc3459f3bb2255bbbdd2b9372","https://git.kernel.org/stable/c/2cc8a4db633b10715450b291c1343859a4b2c509","https://git.kernel.org/stable/c/1e2bec062c5c9ec282636715166056d0998d746d","https://git.kernel.org/stable/c/b0da97c034b6107d14e537e212d4ce8b22109a58"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:30:49.088205Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f5a544e3bab78142207e0242d22442db85ba1eff","version_start_inclusive":true,"version_end":"e74c00c6af428a39e564cdc5bd3a3648c6d8de87","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f5a544e3bab78142207e0242d22442db85ba1eff:e74c00c6af428a39e564cdc5bd3a3648c6d8de87"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f5a544e3bab78142207e0242d22442db85ba1eff","version_start_inclusive":true,"version_end":"e3a93ce6e25757b8f375e38b8f91e1d9da4edc1a","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f5a544e3bab78142207e0242d22442db85ba1eff:e3a93ce6e25757b8f375e38b8f91e1d9da4edc1a"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f5a544e3bab78142207e0242d22442db85ba1eff","version_start_inclusive":true,"version_end":"1ff46c9915c1cbf454db58a8cb87f7cac818e6a6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f5a544e3bab78142207e0242d22442db85ba1eff:1ff46c9915c1cbf454db58a8cb87f7cac818e6a6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f5a544e3bab78142207e0242d22442db85ba1eff","version_start_inclusive":true,"version_end":"974c1c224e85549dc3459f3bb2255bbbdd2b9372","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f5a544e3bab78142207e0242d22442db85ba1eff:974c1c224e85549dc3459f3bb2255bbbdd2b9372"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f5a544e3bab78142207e0242d22442db85ba1eff","version_start_inclusive":true,"version_end":"2cc8a4db633b10715450b291c1343859a4b2c509","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f5a544e3bab78142207e0242d22442db85ba1eff:2cc8a4db633b10715450b291c1343859a4b2c509"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f5a544e3bab78142207e0242d22442db85ba1eff","version_start_inclusive":true,"version_end":"1e2bec062c5c9ec282636715166056d0998d746d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f5a544e3bab78142207e0242d22442db85ba1eff:1e2bec062c5c9ec282636715166056d0998d746d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f5a544e3bab78142207e0242d22442db85ba1eff","version_start_inclusive":true,"version_end":"b0da97c034b6107d14e537e212d4ce8b22109a58","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f5a544e3bab78142207e0242d22442db85ba1eff:b0da97c034b6107d14e537e212d4ce8b22109a58"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15","version_start_inclusive":true,"version_end":"5.15","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15:5.15"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"5.15","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:5.15"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15.209","version_start_inclusive":true,"version_end":"5.15.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15.209:5.15.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.175","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.175:6.1.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.141","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.141:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.91","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.91:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.33","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.33:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.10","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.10:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/e74c00c6af428a39e564cdc5bd3a3648c6d8de87","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/e3a93ce6e25757b8f375e38b8f91e1d9da4edc1a","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/1ff46c9915c1cbf454db58a8cb87f7cac818e6a6","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/974c1c224e85549dc3459f3bb2255bbbdd2b9372","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/2cc8a4db633b10715450b291c1343859a4b2c509","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/1e2bec062c5c9ec282636715166056d0998d746d","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/b0da97c034b6107d14e537e212d4ce8b22109a58","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-21T06:18:49.342000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:55:22.518073Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:22.518073Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:55:22.518073Z","label":"CVSS score revised","source":"cvelistv5"}]}